Thanks for the review. Yeah! I think there's a lot of polishing to be done.
The end portal is supposed to be invisible and the player needs to navigate the maze to find it. Perhaps an easy mode would have the portal always visible. Killing the enemies requires 3 hits. However, you can also hit the bullets. Hence you are often hitting bullets instead of the enemy. I could have made a system for the enemy stop firing for a few seconds after being hit, so as to help with killing it. What I don't understand is the life point system. How would that work?